Dump-car.



U. H, CLARK.

DUMP GAB.

vAPPLIQATION FILED JUNE 24,1909.

Patented Nov.9,1909. 6 sums-SHEET 1.

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DUM? GAR. APPLICATION FILED TUNE 24, 1909.

Patented Nov. 9, 1909. e SHEETS-SHEET 2.

wlmassas C. H. CLARK.

4 DUM;a GAE. APPLioATIoN FILED JUNE' 24', 1909.

939,588. Patented Nov. 9, 1909.

8 SHEETS-SHEET 3 OOQQQQQGQGGQOGQQQ@ A O w| 1'NEssEs` m nNvENTon G. H.l CLARK.

DUMP GAR.

APPLIOATION FILED JUNE 24, 1909.

vPatented N0v.9,19o9.

6 SHEETS-SHEET 4 @www WITNESSES C. H. CLARK.

DUM'P GAR. APPLIoATIoN FILED :UNL 24, 1909.

ENTOR Patented Nov. 9, 1909. 8 SHEETSSHEET 5.

INV N Z@ W im M C. H. CLARK.

DUMP GAR APPLICATION FILED JUNE 24, 1909.

Patented Nov. 9, 1909.

6 SHEETS-SHEET 8.

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| Il I .lr .NIIIIIIIIIIJHHHH wn-NEssEs I'NvENro cnnannsn. cLAnK, or GRAFTON, PENNSYLVANIA.

'DUMP-cnn.'

Specification of Letters Patent. Application filed lune 24, 1909.. .Serial Non $04,047.

Patented Nov. e, ieee.

To all whom 'it may com-em:

Be it known that I, .CHARLES H. CLARK, a resident of Grafton, in thecounty. of Allegheny and State of Pennsylvania, have invented, certainl new and useful Improve? ments in Dump-Cars, of which the following is a specication.

Repairs for dump cars usually pertain either to the doors themselves or to the doorloperating or door-holdingmechanisms. U

der the present practices, -it is necessary to u lay up the whole car whenever any of these p body or parts have to be repaired or renewed.

One object of this inventionis to provide an interchangeable door which isL completeA in, itself as to its operating and holding devices and whichmay be readily applied to and removed' from the car, so that in the event of disorder-or breakdown of a door, the. latter is simply removed and a spare door substituted, with substantiallyno interruption in the use of the car, the disabled door, after being repaired, taking the place lof the door substituted for it and ready to be used whenever'another Aspare door is required.

In the development o f the foregoing object, it becomes a further purpose of t-lieinvention to provide operating and holding mechanisms mounted on and movable with the door, the parts being entirely out of the way ofthe discharging load. When the doors are arranged in pairs which close together, as they usually are, it is necessary,

or at least highly desirable, to have these mechanisms cooperate so that the doors may be operated from either side of the car, and

a further featufe of the invention is a connection between the doors for securing this action. D

The invention is preferably embodied on 'a door which moves `bodily and which is adapted 'to' rotate on its moving supports with guiding means connecting the door,

preferably at its outer edge, with the car opper for regulatin the angular osition of the door with re erence to the cad, the arrangement in this regard being .such `that `the force of the loadA in ltliedi-rec# tion' in which the door opens is sufcient to overcome the friction between the loadv and the door. This condition is. maintained throughout the movement of the `door to ful] open position by varying the angle of direction of travel converse y withy the increas- 'I -ing angle of slope of the door, with the re' sult that the vdoor opens with a positive movement controlled in such manner that when it reaches its limit of travel it comes tol a' stop without appreciable jar or shock.

An objection to inclined doors heretofore' proposed is their tendency to warp under thev weight of the load, this tendency increasing as. t e car becomes older, thus rendering it impossible toA tightly closevthem and un-l avoidable waste results. In the present invention this is overcome by sol reinforcing the door that it always retainsl its original shape, the doors closing tight under all conditio s. And in this connection the location.- of the securing means at the center of thelower edge of the` dooralways insures tight closing.

Another characteristic of the'iventionY is an underframe devoid of center sills, and through which frame allof the draft forces are transmitted, the hopper being wholly free of such forces and preferably so arranged as to be supported entirely by the bolsters.

"The invention also includes an improvedf arrangement of the longitudinal and crosssills at the ends of the frame; also means for defiecting material from the frame which spills over the ends of the hopper.

n the accompanying drawings, F igure` 1 is a side elevationof half of a car constructed in accordance with the invention, and Fig. 2 is a vertical longitudinal section of the same, taken through the center of the car. Fig. 3 is a view partly in top plan and partly in sectional plan, the portionm section being on line 3 3 of Fig. 2. Fig. 4 is a cross-sec tion on the broken line Llee-4c of Fig. 3'. Fig. 5 is a sectional; end elevation on line 5- -5 of ig. 2.- Fig. 6 is a vertical cross-section taken throu h the lcenter of the car, showing. the doors c osed` in full lines and open in dotted lines.- Figs. 7 and 8 are details of a modified form of locking mechanism.

Referring to the draw1ngs,2 are the longitudinal side vsills through which all of the dra-ft forces are transmitted. The ends of the sills are connected together and to the draft sills 3 by a cross si l1 or girder 4, the

latter cut away diagonally at the corners: of

the car. lt.- will be noted that the under g connecting them,. so that movement of either frame is somewhat longer than the top the hopper, and to prevent material spilling over from lodging on the frame, a sheet of corrugated metal or other suitable material extends from the top of the hopper to the end of the frame. Any overflow at the ends of the hopper is thus directed to the ground. The hopper, consisting of thev sides G and inwardly sloping ends 7, is carried wholly by holsters 8, though suitably braced at the ends of the car frame as indicated at 9, and with vertical stays l0 connecting sides Gwith beams 2.

. The inclined bodily movable doors 11 extend longitudinally of the car,each being supported at its ends and midway its longitudinal ,edges by wheels or rollers 18 which travel on transverse track bars 19 supported by draftbeams 3. The upper edges of these bars drop slightly toward their outer extremities and are curved or rounded as shown to coperate with the door-guiding mechanism in varying the inclination of the f during its travel. The trunnions upon which door while traveling from closed to openv position, and vice versa.. As above indicated,

the wheels are so located at the door ends as to carry the load, the guiding means, presently to be described, simply serving to control the changing inclination of the door v wheels 18 are mounted thus constitute a center of rotation for each door, as will be understood.

" glie guiding means for each -door consists ,agpair of bell-crank levers 14 which .are Lgfted in stub shafts 13, secured to the hopper and bolster 8. Arms lllof the levers .Which hang substantially vertical when the doors are closed,"are connected by the trunnion-forming pins 15 with the outer edges ofV the doors, so that as the doors move outward bodily to open position, as in dotted lines in Fig. 6, lever arms 14 move outward .and upward, imparting similar movement .tothe outer portions o the doors. During this movement, wheels 18 roll outward and downward over track bars 19. Vhefn the doors are closed, their inclination is such'as to break the friction between the surfaces thereof and the load, this condition creating a decided tendency to open. But the outward and downward movement of the ldoor supports in connection with the increased inconnection between the two doors whereby.

they :nove in unison. This is effected bythe other arms of theVbell-cranks, arm 16 ofon'e door being disposed upwardly and arms 16 of the other :or downwzw with. link 1'? formation of the faces of the hooks 23 door is imparted to the other. It. apparent, however, that the movement of each door when opening will be as above described irrespective of the connection which causes them to operate together, so thatthe latter may be omitted without in any way affecting the individual movement ot either of the doors.

To remove either door from the car, it i.: only necessary to disconnect-it at 15 from guide-arms 14, which may bc readily done and a spaie door substituted without taking the car out of service for any appreciable length of time. The removed door can then be repaired and, substituted for any other door that may be damaged. To remove both doors and their connecting means it is only necessarily to take 'out the four fulcrum pins l-two at each end of the car, said pins being removably. fitted. This use of interchangeable doors and the facility with which they may be put in place and removed is an important feature of the design as thereby the car is kept. in practically continuous service.

ln connection with the foregoing, a further characteristic of the invention is the location of the door operating and holding devices directly thereon. ln those designs in which the operating and holdingdevices, or some `ot them. are mounted on the car. any disorder requiring shop repairs necessitates withdrawing the car from use until the repairs are completed. With the present invention a distinct. advantage is thus had over cars of such former design.

In the present embodiment lot' the dooroperating and holding means` brackets 2U and 21 are secured to thi` under or outer side of each door in a line extending transversely thereof and preferably at the door center. and rotatable iu each set of brackets is a shaft 22, capable of slight longitudinal playv` and at its inner extremity formed with hook 23. This hooked extremity projects from the rounded face 20 of bracket 20, which face extends backwardly from the lower lougitudinal edge of the door and is curved downwardly and coiipcrutes with the like face of the. bracket 2t) secured to th.K other door to form a space in which lits the latchlink 24 of irregular form. the downward extremities of the latch being slotted at 24 to pass the extremities ot the shafts 22, and also to pass hooks 23 when the shafts arc turned to place the hooks iu the. planes ol' the slots 24. The iuucr faces of the slotted extremities of latch 2t are sloping or of Wedge form, as indicated at 25, and like provide 'a' wedging action when the shafts are turned. lCurves 20 and the shape of link 24 are such that when the doors are released by disengaging either of the hooks 23, the link ico remains clamped to and moves with the other door, as shown in dotted lines in Fig. 6, yout of the way of the discharging load. ,The means for moving shaft 22 longitudinally to secure the wedging hold on the latch consists of a wedge-shaped sleeve 26 turning on shaft links of chain 29 over the extremity of arm 28, as shown in Fig. 3. The shaft y22 may be extended. outwardly and provided with cross pin 22 to facilitate turning thereof; and this extension of the shaft affords leverage for moving the doors to closed position, andif desired, the leverage may be increased by applying a piece of pipe to the end of the shaft. l l

The latch or door-locking mechanism may be variously embodied. In the adaptation shown in Figs. 7 and 8, link 24 is dispensed with, and shafts22 are provided with hooked extremities 30 of such form -as to directly interlock, the same being disengaged by the turning of either shaft, aswill be under,- stood.'

Each of doors 11 is stiened longitudinally of its under side backwardly from its -free or lower edge. -In the present adaptation the stiliening means conslsts of a girder formed of horizontal member 32 extending backwardly lfrom the closing edge of the door and meeting vertical member 33 depending from the inclined door plate between its upper and lower edges. These girder members at their juncture may be extended downward at 34 and forni a'backingfor the outer end bracket 20, with the 'lower end of bracket 21 secured to 'member 33, as shown. Members 32 and 33, together with the door-plate constitute a' triangular box 'girder, with said l member resisting the vertical and horizontal forces resulting from carrying a load on an 'infr-lined door. With the door plate thus reinforced its original` form is permanently maintained; it-cannot sag or become warped by the load and willalways ,close tightly. And with the securing means' at the center of the doors, their lower edges are drawn into. rclose engagement from one end to the other qand no waste can result.

I claim 1. Doors for a dump car, and devices on the doors for holding them closed and operative at either side of thel car for releasin i the doors. 4

2. Doors for a dum car o vening toward oppositesides thereo and evices on the doors for holdin them closed and operative at either sideo the car for releasing the doors.-

3. The combination with a dump car, of

.interchangeable doors removably mounted thereon, and means carried wholly by the doors for holding them closed.

i; The combination with a dump car, of interchangeable doors mounted thereon, and door-operating and holding means mounted wholly on the doors.

5. An inclined bodily movable door for a dump car, rolling supports located on the door to sustain the load, devices on which the supports roll andA shaped to lower the supports as the door moves from closed position, the door rotatable vertically on .the

supports, and guidedevices connected tothe Idoor for determining and controlling the rotation of the door as it moves bodily.

6. An inclined bodily movable door for a dumpcar, rolling supportslocated on the door to sustain the load and on which the door rotates, devices on which the supports door to sustain the load and on which the door rotates, devices on which the supports roll and shaped to lower the supports as the door moves'to open. position, and ivotallysupported guide devices connecte to the upper portion lof the door .and operating to rotate the debil* and increase its inclination as it opens. i l' 8. Doors for a dump car closing together and movable outwardly'when opening,and

` releasing and operating means for the -doors carried thereby.

9. Doors for a dump car mounted for outward bodily movement when opening, and operating means for the doors mounted thereon.V

10. Doors for a dump car `mounted for with means raising the outer portions ofthe doors during such movement, and operatin means for the doors mounted thereon `an .movable therewith.

11`. Doors for a dump car su ported at their ends to move toward and v o m closed position, and operating means for the doors mounted thereon and movable therewith.

12. A door for a dump car inclined whenA closed and mounted to-increaseits inclination when opening, means carried by the door, for holdin 1t"closed, and operatin means'for the oor mounted thereon an movable therewith.

roll and shaped to lower the supports as the outward bodilv movement when opening 13. A pair of doors for a dump car, and

coperating devices mounted on the doors lfor holding them closed and operative interchangeably for releasing them.

14. A pair of doors forv a dump car, ro

CJi

inner ends ofthe sha fts operated by rotating either shaft for either holding the doors vclosed or for releasing them. i

l5. A pair of doors for a dump ear snat'ts rotatably mounted on the under sides of the doors and extending transversely thereof with means for turning them,y and projections at the inner ends of the'shafts cooperating to either` lock the doorsin closed position or to release them.

16. A pair of doors for a'dump car, shafts journaled on the under sides of the doors and extending transversely thereof `with means :for rotating them, and projections at the inner ends of the shafts operating in one position to lock the doors and in another-position to release them.

17. A pair of doors for a dump car. shafts rotatably mounted on the doors and extending transversely thereof. means at the inner ends of the shafts operated by rotating the latter to either lock o1` release the doors, the shafts movable longitudinally for making effective their doorlocking position, and wedge devices for moving the shafts longitudinally. e 18. A pair of doors for a dump car, shafts journaled to rotate on the doors and extending transversely thereof with proj ectionsrat the inner ends ot' the shafts, and a latch device engaged by the projections and operated by the rotation of the shafts to either hold the doors locked or to release them.

` 19. A pair/of doors for, a dump car, bell cranks each having a xed fulcrum with one arm of eachypivotally connected to each door, and a connection between the other .arms whereby the doors move in unison.

20. A pair of doorsI for a dump ear,`the onte'r portions of the doors mounted to move upwardly and outwardly when opening, bellcranks having fixed fulcrums with one arm connected to the doors respectively, and a link connecting'the other arms, whereby the doors move in unison.

2l. Doors for a dump car movable away one of the doors, and means connecting the other arms whereby the doors move in unison.

22. Doors l:t'or a dump car, supporting vmeans for the doors at the ends thereof.

meansy mounted on the doors between their ends for holding them closed and for releasing them, and means connecting the doors for causing` them to move in unison.

23. Inclined bottom doors for a dump ea r closing together at the center thereof. rollingsupports at the door-ends secured thereto between their longitudinal edges, tracks on which 'the rolling supports bear, bellcranks having` fixed horizontal axes above the -doors with one arm of each connected to the doors, a -linlr connecting the other arms of the bell-cranks, and door-securing and door-operating means mounted on and movable with the doors. 24. In a car, an underframe extended beyond the ends ofthe hopper.l and an inclined sheet for defiecting material overtlowing the hopper end. 25. In a car, an underframe extending beyond' the ends ofl the hopper, and means for deliecting from the underframe material overiowing the hopper.

26. An inclined door for a dump car rein- .forced by a triangular box girder.

27. An inclineddoor for a dump car, a girder member extending backwardly from the free edge of the door, and another girder member extending downwardly from tbe door and joining the rst mentioned girder member.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES H. CLARK.

Witnesses:

J. M. NEsBiT, ALEX. S. MAISON. 

